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Tailoring the Mechanical Properties of 3D Microstructures Using Visible Light Post-Manufacturing

机译：使用可见光后期制造量身定制3D微结构的机械性能

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摘要

The photochemistry of anthracene, a new class of photoresist for direct laser writing, is used to enable visible-light-gated control over the mechanical properties of 3D microstructures post-manufacturing. The mechanical and viscoelastic properties (hardness, complex elastic modulus, and loss factor) of the microstructures are measured over the course of irradiation via dynamic mechanical analysis on the nanoscale. Irradiation of the microstructures leads to a strong hardening and stiffening effect due to the generation of additional crosslinks through the photodimerization of the anthracene functionalities. A relationship between the loss of fluorescence-a consequence of the photodimerization-and changes in the mechanical properties is established. The fluorescence thus serves as a proxy read-out for the mechanical properties. These photoresponsive microstructures can potentially be used as "mechanical blank slates": their mechanical properties can be readily adjusted using visible light to serve the demands of different applications and read out using their fluorescence.
机译：蒽的光化学是用于直接激光写入的新型光致抗蚀剂，可用于对制造后的3D微结构的机械性能进行可见光控制。通过纳米级的动态力学分析，在辐照过程中测量了微结构的机械和粘弹性（硬度，复弹性模量和损耗因子）。由于通过蒽官能团的光二聚作用产生了额外的交联，微结构的辐照导致强烈的硬化和硬化效果。建立了荧光损失（光致二聚化的结果）与机械性能变化之间的关系。因此，荧光可以作为机械性能的替代读数。这些光响应性微结构可以潜在地用作“机械空白板”：可以使用可见光轻松调节其机械性能，以满足不同应用的需求，并可以使用其荧光读数。

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  • 来源
    《Advanced Materials》 |2019年第30期|1901269.1-1901269.6|共6页
  • 作者

    Gernhardt Marvin; Blasco Eva; Hippler Marc; Blinco James; Bastmeyer Martin; Wegener Martin; Frisch Hendrik; Direct Christopher Barner-Kowollik;

  • 作者单位

    QUT Phys & Mech Engn Sch Chem 2 George St Brisbane Qld 4000 Australia;

    KIT Inst Chem Technol & Polymer Chem Engesserstr 18 D-76128 Karlsruhe Germany;

    KIT Zool Inst Cell & Neurobiol Fritz Haber Weg 4 D-76131 Karlsruhe Germany|KIT Inst Appl Phys Wolfgang Gaede Str 1 D-76131 Karlsruhe Germany;

    KIT Zool Inst Cell & Neurobiol Fritz Haber Weg 4 D-76131 Karlsruhe Germany|Karlsruhe Inst Technol Inst Funct Interfaces Hermann von Helmholtz Pl 1 D-76344 Eggenstein Leopoldshafen Germany;

    KIT Inst Appl Phys Wolfgang Gaede Str 1 D-76131 Karlsruhe Germany|Karlsruhe Inst Technol Inst Nanotechnol Hermann von Helmholtz Pl 1 D-76344 Eggenstein Leopoldshafen Germany;

    QUT Phys & Mech Engn Sch Chem 2 George St Brisbane Qld 4000 Australia|KIT Inst Chem Technol & Polymer Chem Engesserstr 18 D-76128 Karlsruhe Germany;

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  • 正文语种 eng
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  • 关键词

    direct laser writing; dynamic mechanical analysis; microstructures; visible light photochemistry;

    机译：直接激光书写;动态力学分析;微观结构可见光光化学;

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